John f



(No Model.) 2 Sheets-Sheet 1.

J.F.APPLEBY.

TENSION DEVICE FOR SELF BINDING HARVESTERS.

No. 567,803. Patented Sept. 15, 1896.-

(N0 Mode-1. 2 SheetsSheet 2.

J. P. APPLEBY. TENSION DEVICE FOR SELF BINDING HARVESTERS.

No. 567,803 Patented Sept. 15, 1896.

I lINiTEn STATES PATENT EETEE.

JOHN F. APPLEBY, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE HARVESTER KING COMPANY, OF HARVEY, ILLINOIS.

TENSION DEVICE FOR SELF-BINDING HARVESTERS.

SPECIFICATION forming part of Letters Patent No, 567,803, dated September 15, 1896.

Application filed March 81, 1896. Serial ITO-585,850. (N model.) i

To all whom it may concern.- the lever serves as a stop to. limit the down- Be it known that 1, JOHN F. APPLEBY, of ward movement of the lever and preserve a Chicago, Illinois, have invented certain new proper alinement of the parts. The forward and useful Improvements in Tension Devices part of the lever is furnished with an eye 25, 5 for Self-Binding Harvesters, of which the 1301- through which the cord is led. In the posilowing is a specification. tion shown by the full lines in Fig. 1 the pack- My invention relates to an improved teners are at work, the needle being at the backsion device for self-binding harvesters which ward limit of its stroke and stationary. As is adapted to permit the cord to run freely the needle advances its eye following the path 10 while the packers are at work and the gavel indicated by dotted lines of said figure, and is being formed, and which will operate to attaining the secondary position shown by tension the cord while the bundle is being the dotted lines, the cord is raised, thus liftbound. On the forward movement of the ing the front end of the lever 21 and rocking needle the cord is drawn out under tension. the clamp 18 011 its pivot. By this movement I 5 In the accompanying drawings, Figure 1 is of the clamp the notched portion is turned a side elevation of a binder mechanism, showforward and the upper surface or uncut poring my tension device applied thereto. Fig. tion of the clamp is presented beneath the 2 is an enlarged view, in side elevation, with cord and pinches it against the lower free a portion of the standard carrying the tension edge of the dog 13, which thereupon exerts a 20 devices broken away. Fig. 8 is a sectional tension upon the cord; The cord is thus per- View of the tension devices, and Fig. 4 aplan. mitted to render freely when the packers are In the drawings, 5 represents the binderat work and is drawn out under desired tenframe, 6 the packers, and 7 the needle. The sion while the needle is performing its forpackers serve to compress the flowing grain ward movement and while the knot is being 25 to form the gavel in the usual way, and the tied. Attention is called to the fact that needle carries the cord 8. Said cord is led this tension device is so located that the cord through a tension device which is mounted passes beneath and in a rightline through the upon a standard 9, connected to the frame 5. tension device and the eye of the needle to Said standard has its upper end chambered the cord-holder, and also to the fact that the 30 out and provided with three bearings 10, 11, tension device is so located that it may be and 12. On the bearing 10 is pivotally used on machines of various makes, and that mounted a dog 13, which is normally held it is selfoperative, that is to say, it is not didown on the curved surfaces 14 of the charm rectly controlled by any of the moving parts bered head of the standard 9 by arod15, havof the binder, and that the cord may be led 3 5 ing a spring 16, normally tending to depress into it from either side of the machine. I atsaid rod and adjustable by means of a nut tain, therefore, by simple means an effective 17. The free end of the dog 13 is in such a tension device which is perfectly adapted at position that at one stage of the operation all times to the exigencies of use. the cord is pulled up and deflected against Attention is called to the relative location 0 said lower free edge, thus raising the dog 13 of the pivots of the several cooperating parts. and bringing the tension of the spring to hear The clamp is pivoted eccentrically, so that its uponthecord. Upon thebearingl2is mountnatural tendency is to rock backward, but ed a pivoted clamp 18, having a cord-guide the friction of the cord in pulling through the 9 5 19, through which the cord is led, and a notch eye and over the curved surfaces of the upper 45 20 in its surfacein front of its pivot, through end of this clamp tends to assist in drawing which the cord is drawn. Upon the pivotit forward into the clamping position. The pin 11 is mounted a rocking lever 21, having dog has its acting or clamping edge in front a tooth 22, working in a notch 23 in the forof its pivot, or between its pivot and the point ward face or edge of the clamp 18, and a heel of strain, and when a knot or other obstruc- 5o 24, engaging the lower edge of said clamp. tion on the cord reaches the clamp it has suf- The tooth serves to rock the clamp on its pivot ficient leverage upon the forward edge of the at one stage of the operation, and the heel of dog to raise the latter against the tension of its spring and thus allow the knot or other obstruction to pass with slightly-added tension. The forms of the several parts and the character and arrangement of the spring may be modified.

I claim 1. A tension device comprising in combination a pivoted clamp a pivoted lever engaging the clamp, and a spring-controlled dog substantially as described.

2. A tension device for harvesters comprising in combination a pivoted clamp, a pivoted lever adapted to rock said clamp,and a springcontrolled dog cooperating with the clamp, said several parts being so arranged with reference to each other that the cord during its forward movement operates to tilt the lever and thereby to rock the clamp and tension the cord, substantially as described.

3. A tension device comprising in combination a pivoted clamp having a cord-guiding eye at its rear end, a friction-surface over which the cord passes and a notch in front of said friction-surface, a pivoted lever having a rocking engagement with the clamp, and a heel adapted to fixedly engage the clamp in the normal position, and a spring-controlled dog, the pivoted lever having also a cordguide, and adapted to be rocked upon its pivot by the running cord, whereby to tension the latter dnrin g the process of tying the bundle, substantially as described.

4(- A tension device for harvesters comprising in combination an eccentrically-pivoted clamp, a pivoted lever engaged with the clamp and adapted to be rocked on its pivot by the deflection of the running cord, and a springcontrolled dog, having a bearing portion adapted to cooperate with the clamp, and said bearing portion being located in front of the aXis of the dog, and on the side thereof at which the strain upon the cord is exerted whereby to permit obstructions to pass without undue tension, substantially as described.

JOHN F. APPLEBY.

Witnesses:

O. G. LINTHICUM, FREDERICK C. GoonWIN. 

